<template>
<div class="articaldetail">
    <div class="header">
        <div class="left">
            <van-icon name="arrow-left back"
                      @click="$router.back()" />
            <span class="iconfont iconnew new"></span>
        </div>
        <span :class="{ follow: article.has_follow }" 
        @click="followFn">{{ article.has_follow?'已关注':'关注' }}</span>
    </div>
    <div class="detail">
        <div class="title">{{article.title}}</div>
        <div class="desc">
            <!-- 
              数据请求回来之前，DOM会先渲染一次，因此article是一个空对象，
              空对象获取user属性得到的就是undefined，那么undefined.nickname就报错了
              如何解决呢 ？答：等到数据请求回来再渲染就不会报错了，
              怎么写代码呢？答：可以使用短路运算解决
             -->
            <span>{{article.user&&article.user.nickname}}</span> &nbsp;&nbsp;
            <span>{{article.craete_date}}</span>
        </div>
        <!-- type值为1 表示渲染文章 值为2表示渲染视频 -->
        <div v-if="article.type==1" class="content" v-html="article.content">
            <!-- 文章的内容： -->
        </div>
        <div v-else class="content videoContent">
          <!-- 
            poster: 设置视频封面的属性，值就是图片路径
            controls：视频的控制器
           -->
          <video :poster="article.cover&&article.cover[0].url" controls :src="article.content"></video>
        </div>
        <div class="opt">
            <span class="like">
                <van-icon name="good-job-o" />点赞
            </span>
            <span class="chat">
                <van-icon name="chat"
                          class="w" />微信
            </span>
        </div>
    </div>
    <!-- 精彩跟帖 -->
    <div class="keeps">
        <h2>精彩跟帖</h2>
        <div class="item">
            <div class="head">
                <img src="../assets/01.jpg"
                     alt />
                <div>
                    <p>火星网友</p>
                    <span>2小时前</span>
                </div>
                <span>回复</span>
            </div>
            <div class="text">文章说得很有道理</div>
        </div>
        <div class="more" @click="toCommentList">更多跟帖</div>
    </div>
    <!-- 底部评论块 -->
    <commentFooter :obj="article"></commentFooter>
</div>
</template>

<script>
import  { articleDetail } from "@/api/news.js"
import { user_follows,user_unfollow } from "@/api/user.js"
export default {
  data(){
    return {
      article: {}
    }
  },
  created(){
    let id = this.$route.query.id; // 文章ID
    articleDetail(id).then(res=>{
      // console.log(58,res);
      this.article = res.data.data;
    })
  },
  methods: {
    // 跳转到评论列表页面
    toCommentList(){
      this.$router.push({
        path: "/commentList",
        query: {
          id: this.$route.query.id
        }
      })
    },
    // 关注用户
    followFn(){
      // 传作者的id
      if(this.article.has_follow == true){
        // 取消关注
        user_unfollow(this.article.user.id).then(res=>{
          // console.log(90,res);
          if(res.data.message == "取消关注成功"){
            // 更新浏览器中按钮的效果
            this.article.has_follow = !this.article.has_follow 
            this.$toast.success(res.data.message)
          }
        })
        return
      }
      // 关注
      user_follows(this.article.user.id).then(res=>{
        // console.log(87,res);
        if(res.data.message == "关注成功"){
          // 更新浏览器中的按钮效果
          this.article.has_follow = !this.article.has_follow
          this.$toast.success(res.data.message)
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.articaldetail{
  padding-bottom: 52px;
}
.header {
  padding: 0px 10px;
  height: 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #ccc;
  > .left {
    height: 100%;
    vertical-align: middle;
    position: relative;
    .van-icon {
      position: absolute;
      top: 15px;
      left: 0;
    }
    > span {
      margin-left: 22px;
      font-size: 50px;
    }
  }
  > span {
    padding: 5px 15px;
    background-color: #f00;
    color: #fff;
    text-align: center;
    border-radius: 15px;
    font-size: 13px;
  }
  .follow{
    border: 1px solid #000;
    color: #000;
    background-color: transparent;
  }
}
.detail {
  padding: 15px;
  .title {
    font-size: 18px;
    font-weight: bold;
    padding: 10px 0;
  }
  .desc {
    line-height: 30px;
    color: #999;
    font-size: 13px;
  }
  // 通过v-html渲染的内容，vue是把这个内容当组件进行解析的，
  // 因此设置里面的样式可以使用样式穿透
  /deep/.content {
    // text-indent: 2em;
    line-height: 24px;
    font-size: 15px;
    padding-bottom: 30px;
    width: 100%;
    .photo{
      img{
        width: 100%;
      }
    }
  }
  .videoContent{
    video{
      width: 100%;
    }
  }
}
.opt {
  display: flex;
  justify-content: space-around;
  .like,
  .chat {
    height: 25px;
    padding: 0 15px;
    font-size: 14px;
    line-height: 25px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 15px;
  }
  .w {
    color: rgb(84, 163, 5);
  }
}
.keeps {
  border-top: 5px solid #ddd;
  padding: 0 15px;
  > h2 {
    line-height: 50px;
    text-align: center;
  }
  .item {
    padding: 10px 0;
    border-bottom: 1px solid #ccc;
    .head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      > img {
        width: (50/360) * 100vw;
        height: (50/360) * 100vw;
        display: block;
        border-radius: 50%;
      }
      > div {
        flex: 1;
        display: flex;
        flex-direction: column;
        margin-left: 10px;
        > span {
          font-size: 12px;
          color: #999;
          line-height: 25px;
        }
      }
      > span {
        color: #999;
        font-size: 13px;
      }
    }
    .text {
      font-size: 14px;
      color: #333;
      padding: 20px 0 10px 0;
    }
  }
  .more {
    width: 100px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 15px;
    margin: 20px auto;
    font-size: 13px;
  }
}
</style>